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題名 | 利用間歇曝氣法及改進碳/氮比去除養豬廢水之氮= |
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作者 | 前川孝昭; 廖中明; 馮興東; |
期刊 | 農業工程學報 |
出版日期 | 19940600 |
卷期 | 40:2 1994.06[民83.06] |
頁次 | 頁33-43 |
分類號 | 445.463 |
語文 | chi |
關鍵詞 | 硝化; 脫氮; 養豬廢水; 間歇曝氣; 碳/氮比; Nitrification; Denitrification; Swine wastewater; Intermittent aeration; C/N ratio; |
中文摘要 | 選擇臺灣一家養豬場其原廢水之T-N/BOD比大於1進行氮去除處理系統之改進。改進法為藉支管引入原廢水進入活性污泥槽以使得T-N/BOD比變為 0.2(BOD:1600mg/L,T-N=200mg/L)並改為間歇式(1hr:1hr)曝氣程序。結果顯示,T-P之去除率分別為54~77%,58~69%及10~60%。在日本亦選擇一家養豬場其BOD,T-N及T-P濃度皆高于臺灣養豬場進行氮去除效率改進。改進法為藉添加鎂鹽及磷酸鹽以形成銨結晶沈澱以改進原廢水之C/N比。當達到完全之銨結晶沈澱後,便以間歇式(1hr:1hr)曝氣法對改進後之養豬廢水(T-N/BOD比為0.14;BOD=8200mg/L;T-N=1166mg/L)進行實驗。結果顯示T-N及之去除率分別為91%及99%。T-P並未去除,而若添加3%之CaCl₂溶液則PO₄-P之去除率便達60%。 |
英文摘要 | An nitrogen removal experiment has been carried out in a swine wastewater treatment system in Taiwan by introducing a part of raw wastewater whose T-N/BOD ratio is greater than 1 into an intermittently(1hr:1hr)activated sludge tank through a by-pass. As a result, T-N/BOD ratio becomes about 0.2(BOD=1000mg/L, T-N=200mg/L). The results show that the removal ratios of NH₄-N,T-N, and T-P are 54-77%, 58-69%, and 10-60%, respectively. A process on crystallized precipitation of ammonium by adding magnesium salt and phosphate also carried out in Japan to improve C/N ratio in swine wastewater where concentrations of BOD, T-N and T-P were much higher than those of in Taiwan. After completion of crystallized precipitation of ammonium, an intermittent aeration process of 1hr:1hr then is used for the improved swine wastewater whose T-N/BOD ratio is 0.14(BOD=8200 mg/l, T-N=1166 mg/l). The result shows that the removal ratios of T-N and NH₄-N are 91% and 99%, respectively. T-P is not removed, while PO₄-P is removed by 60% as 3% of Cacl₂ liquid is added. |
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